Meteoritical Bulletin: Entry for Grosvenor Mountains 17051

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Grosvenor Mountains 17051

Basic information

Name: Grosvenor Mountains 17051
This is an OFFICIAL meteorite name.
Abbreviation: GRO 17051
Observed fall: No
Year found: 2017
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 2.81 kg

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	Iron, IAB complex
Antarctic Meteorite Newsletter:	AMN 41(2)	(2018)	Iron, IAB complex
Recommended:			Iron, IAB complex [explanation]

This is 1 of 77 approved meteorites (plus 1 unapproved name) classified as Iron, IAB complex. [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites

Comments:

Approved 28 Sep 2018

Writeup

help

Writeup from AMN 41(2):

Sample Number

GRO 17051

Newsletter

41,2

Location

Grosvenor Mountains

Field Number

25594

Dimensions

19.0 x 8.0 x 5.0

Weight

2805.950

Original Classification

Iron-IAB

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 0; Ferrosilite (mol%): 0

A/B

A

Macroscopic Description - Cari Corrigan, Nicole Lunning, Tim McCoy

This roughly rectangular mass measures ~20 x 8 x 6 cm. One side is flattened with shallow indentations, likely regmaglypts, and exhibits both weathering (including an overall brownish stain and rust haloes) and whitish regions suggestive of evaporites. The other side exhibits deep indentation with evaporite deposits in the lowest portion of those indentations, suggestive of extensive weathering and possible ablation of less resistant phases.

Thin Section Description (,2) - Cari Corrigan, Nicole Lunning, Tim McCoy

This section exhibits a coarse Widmanstätten pattern with kamacite lamellae of ~1 mm in width. Kamacite exhibits subgrain boundaries and alpha 2 structure and some grains exhibit a distinct darkening and cross-hatching suggestive of Neumann bands. Taenite ranges from thin ribbons to coarser areas with well-developed plessitic structure. Brecciated and weathered inclusions of troilite and daubréelite are present. Taken together these features are suggestive of extensive shock. Compositionally, this iron has 7.3 wt.% Ni, and 0.08 wt.% P, determined from microprobe transects. Classification is uncertain, but the meteorite may be a IAB iron.

Antarctic Meteorite Images for Sample GRO 17051

Lab Photo of Sample GRO 17051 Displaying North Orientation

Lab Photo of Sample GRO 17051 Displaying South Orientation

Lab Photo of Sample GRO 17051 Displaying West Orientation

Lab Photo of Sample GRO 17051 Displaying Top Orientation

Lab Photo of Sample GRO 17051 Displaying East Orientation

Lab Photo of Sample GRO 17051 Displaying Bottom Orientation

Data from:
  MB107
  Table 0
  Line 0:

Date:	2017
Mass (g):	2805.950
Pieces:	1
Class:	Iron, IAB complex
Weathering grade:	A/B
Classifier:	SI
Type spec mass (g):	2805.950
Type spec location:	SI
Main mass:	SI
Finder:	ANSMET
Comments:	Submitted by AMN

Institutions
and collections

SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Website (institutional address; updated 16 Jan 2012)

Catalogs:

Search for this meteorite in the NASA/JSC database (U.S.):

References:

Published in Antarctic Meteorite Newsletter 41(2) (2018), JSC, Houston
Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Antarctica

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 43352 approved meteorites from Antarctica (plus 3802 unapproved names)

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